CN109444207A - A kind of melting point compound detector and its measuring method - Google Patents
A kind of melting point compound detector and its measuring method Download PDFInfo
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- CN109444207A CN109444207A CN201811127653.0A CN201811127653A CN109444207A CN 109444207 A CN109444207 A CN 109444207A CN 201811127653 A CN201811127653 A CN 201811127653A CN 109444207 A CN109444207 A CN 109444207A
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- warm table
- melting point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/04—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of melting point; of freezing point; of softening point
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Abstract
The present invention relates to a kind of melting point compound detector more particularly to a kind of detectors and its measuring method for judging automatically melting point compound and melting range.The compounds of this invention fusing point detector, including sample warm table, heating wire, camera, control system, sample warm table is horizontally disposed and for placing compound to be detected, heating wire is set to the lower section of sample warm table, and camera is set to the top of sample warm table and is electrically connected to the control system, and the heating wire heats sample warm table, and under the different time sections that can capture of camera compound molten state, and the pictorial information captured is fed back into control system and is analyzed.Control system analyze and quantified using overall target calculation formula by the variation to wrinkle, corner angle, color space in image, to judge the fusing point and melting range of compound.
Description
Technical field
The present invention relates to a kind of melting point compound detector more particularly to a kind of melting point compound and melting ranges of judging automatically
Detector and its measuring method.
Background technique
By the fusing point and melting range that measure compound, it will be appreciated that the quality and purity of compound utilize chemical combination to reasonable
Object is of great significance.For the fusing point and melting range of more convenient measurement compound, more and more laboratory staffs
Selection is using the test method of automatic melting point apparatus, and there are mainly two types of the methods for measuring fusing point at present: one is use microscope pair
Fusion process carries out artificial observation, manually rule of thumb judges melting range, and deterministic process depends on the thin of artificial experience and operator
It causes and patient, such method compares labor intensive, and human error is larger；Another kind is to irradiate compound using light, and make
Light transmission is detected with photosensitive sensor, terminal is judged automatically according to light transmission situation of change.Though this instrument is configured with camera,
This camera is only used to record a video to fusion process, and video recording is played back when to need, and this method does not utilize image to mention
The details of confession, such as wrinkle, corner angle information, so the degree of automation is not high, the fusing point of judgement is also less reliable and accurate.
Summary of the invention
The purpose of the present invention is being directed to the above-mentioned problems in the prior art, it is a kind of increasingly automated, accurate to provide
Reliably judge automatically the fusing point detector and its measuring method of melting point compound and melting range.
Above-mentioned purpose of the invention can be realized by following technical proposal: a kind of melting point compound detector, packet
Sample warm table is included, heating wire, camera, control system, sample warm table is horizontally disposed and for placing compound to be detected,
Heating wire is set to the lower section of sample warm table, and camera is set to the top of sample warm table and is electrically connected to the control system,
The heating wire heats sample warm table, and under the different time sections that can capture of camera compound molten state, and
The pictorial information captured is fed back to control system to analyze.
In above compound fusing point detector, the sample warm table is provided with temperature sensor, the temperature sensing
Device is electrically connected to the control system and the temperature information Real-time Feedback that can will test is to control system.Temperature sensor detection temperature
Degree, feeds back to control system for temperature value.When needing to be rapidly heated, control system gives heating wire larger current.It is slow when needing
When slow heating, control system gives heating wire smaller current.Control system controls heating by adjusting the size of current of heating wire
Rate, to obtain the fusion process of complete and accurate.
In above compound melting point apparatus, the heating wire side is equipped with the fan of adjustable wind speed, the fan and control
System electrical connection processed.In the case where control system is not powered, it is too fast that heating wire residual temperature still rises compound melts temperature
When, control system starts fan for cooling, and rotation speed of the fan can be adjusted as needed by control system, closely realizes the essence to temperature
Really control.
In above compound melting point apparatus, camera side is provided with the photograph illuminated to sample warm table
Mingguang City source.The present invention is more clear for the picture for shooting camera as it can be seen that convenient for analyzing picture detail variation, leads to
The color for overregulating sample warm table is presented in lighting source background colour and untested compound forms larger contrast.
A second object of the present invention is to provide a kind of measuring methods of above compound fusing point detector, by test compounds
Object is placed on sample warm table, cooperates adjusting temperature by heating wire, fan and temperature sensor, while being caught with camera
The image of compound melts process is caught, and image information is analyzed by control system, analysis wrinkle, corner angle, color are empty
Between variation and quantified using overall target calculation formula, to judge the fusing point and melting range of compound.
Preferably, the overall target calculation formula are as follows:
Δ y=K1Δa+K2Δb+K3Δc+K4Δd+K5Δe
Wherein:
Y: the overall target of fusion process judgement,
A: the wrinkle quantity expressed with line segment,
B: the length of wrinkle line segment,
C: with line segment express corner angle quantity,
D: the length of corner angle line segment,
E: color space expression value,
K1、K2、K3、K4、K5: constant.
The present invention analyzes image by control system, finds out the wrinkle and corner angle of compound, analyzes these line segments
Length and quantity.When the length of line segment and quantity start variation, compound starts to melt, and keeps temperature-resistant or slow at this time
It is slow to rise；When the length of line segment and quantity, which are reduced to, no longer to be changed to a certain degree, the fusing of compound terminates, and gradually delays at this time
It is slow to increase temperature, complete primary analysis.Comprehensive descision index Δ is obtained using overall target calculation formula in the analysis process
Y, then ((Δ t) quantifies fusion process to Δ y)/Δ temperature by calculating overall target differential value=Δ comprehensive descision index.When
When the absolute value of overall target differential value increases, show that compound cosmetic variation is accelerated, close to fusing point, at this moment slowly heating, has
Conducive to obtaining accurate fusing point and melting range；When overall target differential value absolute value is smaller, heating rate can be quicker, is conducive to
Analysis is completed as early as possible.Overall target calculation formula is not limited to calculation formula provided by the invention, can be as needed from control system
Middle selection.
Preferably, the color space include: HSI, HSV, RGB, CMY, CMYK, HSL, HSB, Ycc, XYZ, Lab,
YUV color space.
Compared with prior art, the present invention has the advantage that
1. the compounds of this invention fusing point detector structure is simple, easy to operate, high degree of automation can be realized rapidly and efficiently
To the Accurate Determining of melting point compound and melting range, have broad application prospects.
2. the measuring method of the compounds of this invention fusing point detector makes full use of the image information during compound melts,
Start with from image detail and analysis quantization, simulation eye-observation judgement are carried out to compound wrinkle, corner angle, color space overall target
Fusing point and melting range, judge automatically that result is more accurate and reliable, and the range for being applicable in compound is more extensive.
Detailed description of the invention
Fig. 1 is the structure chart of the compounds of this invention fusing point detector；
Formant symbol description
1-fan
2-heating wire
3- sample warm table
4-lighting sources
5-cameras
6-compounds to be detected
7-electric connection lines
8-control systems
9-temperature sensors
Fig. 2 is the original graph in the embodiment of the present invention before compound melts；
The procedure chart that corner angle, wrinkle change when Fig. 3 is compound melts in the embodiment of the present invention；
Fig. 4 is the relational graph of compound melts of embodiment of the present invention overall target and temperature.
Specific embodiment
The following is specific embodiments of the present invention, and illustrates that technical scheme of the present invention will be further described, but this
Invention is not limited to this embodiment.
As shown in Figure 1, the compounds of this invention fusing point detector comprising sample warm table 3, heating wire 2, camera 5, control
System 8 processed；Sample warm table 3 is horizontally disposed and for placing compound 6 to be detected, and heating wire 2 is set to sample warm table 3
Lower section, camera 5 are arranged in the top of sample warm table 3 and are electrically connected to the control system, and the heating wire 2 is to sample warm table
3 heating, and the camera 5 can capture the molten state of different time sections compound, and the pictorial information captured is fed back
It is analyzed to control system 8.
In above compound fusing point detector, temperature sensor 9 is provided on the sample warm table 3, the temperature passes
The temperature value Real-time Feedback that sensor 9 is electrically connected and will test with control system 8 is to control system 8；2 side of heating wire is set
There is the fan 1 of adjustable wind speed, fan 1 is electrically connected with control system 8；5 side of camera, which is equipped with, shines sample warm table 3
Bright lighting source 4.
The measuring method of melting point compound detector: one or several granular antifebrins are put into sample warm table
3, the background colour of sample warm table 3 is adjusted by lighting source 4, then heat to antifebrin by heating wire 2, temperature passes
The temperature value that sensor 9 will test feeds back to control system 8, while shooting image with microimaging head 5, such as Fig. 2 and Fig. 3 institute
Show, and the image information captured is fed back into control system 8 and is analyzed；
Control system 8 analyzes the variation of wrinkle, corner angle, color space in image, wrinkle as shown in Figure 3, corner angle, and benefit
The comprehensive descision index of fusion process is calculated with overall target calculation formula, then by comprehensive descision index to temperature sensor 9
The temperature value of feedback is differentiated i.e. overall target differential value, when the absolute value of overall target differential value increases, shows acetophenone
The cosmetic variation of amine is accelerated, and close to fusing point, needs slowly to heat up, at this moment control system 8 gives heating wire 2 smaller current, favorably
In obtaining accurate fusing point and melting range；When overall target differential value absolute value is smaller, quicker heating is needed, control system 8 is given
2 larger current of heating wire is given, is conducive to complete to analyze as early as possible.Antifebrin fusing point and melting range are judged by overall target differential value
Analysis result it is as shown in Figure 4.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can do various modifications or supplement or is substituted in a similar manner to described specific embodiment, but simultaneously
Spirit or beyond the scope defined by the appended claims of the invention is not deviated by.
It is skilled to this field although present invention has been described in detail and some specific embodiments have been cited
For technical staff, as long as it is obvious for can making various changes or correct without departing from the spirit and scope of the present invention.
Claims (7)
1. a kind of melting point compound detector, which is characterized in that including sample warm table, heating wire, camera, control system,
Sample warm table is horizontally disposed and for placing compound to be detected, and heating wire is set to the lower section of sample warm table, camera
It is set to above sample warm table and is electrically connected to the control system, the heating wire can heat sample warm table, and camera
The molten state of different time sections compound can be captured, and the pictorial information captured is fed back into control system and is analyzed.
2. melting point compound detector according to claim 1, which is characterized in that the sample warm table is provided with temperature
Sensor, the temperature sensor is electrically connected to the control system and the temperature information Real-time Feedback that can will test to controlling is
System.
3. melting point compound detector according to claim 1, which is characterized in that the side of the heating wire is equipped with adjustable
The fan of wind speed is saved, the fan is electrically connected to the control system.
4. melting point compound instrument according to claim 1, which is characterized in that the camera side, which is provided with, adds sample
The lighting source that thermal station is illuminated.
5. a kind of measuring method of melting point compound detector as described in claim 1, which is characterized in that by untested compound
It is placed on sample warm table, adjusting temperature is cooperated by heating wire, fan and temperature sensor, while being captured with camera
The image of compound melts process, and image information is analyzed by control system, analyze wrinkle, corner angle, color space
Variation and quantified using overall target calculation formula, to judge the fusing point and melting range of compound.
6. the measuring method of melting point compound detector according to claim 5, which is characterized in that the overall target
Calculation formula are as follows:
Δ y=K1Δa+K2Δb+K3Δc+K4Δd+K5Δe
Wherein:
Y: the overall target of fusion process judgement,
A: the wrinkle quantity expressed with line segment,
B: the length of wrinkle line segment,
C: with line segment express corner angle quantity,
D: the length of corner angle line segment,
E: color space expression value,
K1、K2、K3、K4、K5: constant.
7. the measuring method of melting point compound detector according to claim 5, which is characterized in that the color space
It include: HSI, HSV, RGB, CMY, CMYK, HSL, HSB, Ycc, XYZ, Lab, YUV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811127653.0A CN109444207A (en) | 2018-09-27 | 2018-09-27 | A kind of melting point compound detector and its measuring method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811127653.0A CN109444207A (en) | 2018-09-27 | 2018-09-27 | A kind of melting point compound detector and its measuring method |
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| CN109444207A true CN109444207A (en) | 2019-03-08 |
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| CN201811127653.0A Pending CN109444207A (en) | 2018-09-27 | 2018-09-27 | A kind of melting point compound detector and its measuring method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487839A (en) * | 2019-08-16 | 2019-11-22 | 河北省产品质量安全检测技术中心 | Image method fuse salt melting point apparatus |
| CN111830077A (en) * | 2019-04-23 | 2020-10-27 | 北京振兴计量测试研究所 | Measuring device and method for identifying melting point of high-temperature material based on image |
| CN112162002A (en) * | 2020-09-28 | 2021-01-01 | 昆明德源文化传播有限公司 | Enamel processing device, system and method for metal weaving |
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| CN2901303Y (en) * | 2006-04-25 | 2007-05-16 | 魏海军 | Visual integrated melting and boiling point detector |
| US20090190626A1 (en) * | 2003-10-09 | 2009-07-30 | University Of Southhampton | Measurement of melting points of multiple samples |
| JP2011069652A (en) * | 2009-09-24 | 2011-04-07 | National Institute For Materials Science | Method and device for simultaneously thermally analyzing a plurality of specimens |
| CN102590264A (en) * | 2012-01-20 | 2012-07-18 | 北京吉天仪器有限公司 | Grease melting point measuring meter and method for measuring grease melting point by same |
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2018
- 2018-09-27 CN CN201811127653.0A patent/CN109444207A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| GB8703185D0 (en) * | 1987-02-12 | 1987-03-18 | Keene B R T | Melting point apparatus |
| US20090190626A1 (en) * | 2003-10-09 | 2009-07-30 | University Of Southhampton | Measurement of melting points of multiple samples |
| CN2901303Y (en) * | 2006-04-25 | 2007-05-16 | 魏海军 | Visual integrated melting and boiling point detector |
| JP2011069652A (en) * | 2009-09-24 | 2011-04-07 | National Institute For Materials Science | Method and device for simultaneously thermally analyzing a plurality of specimens |
| CN102590264A (en) * | 2012-01-20 | 2012-07-18 | 北京吉天仪器有限公司 | Grease melting point measuring meter and method for measuring grease melting point by same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111830077A (en) * | 2019-04-23 | 2020-10-27 | 北京振兴计量测试研究所 | Measuring device and method for identifying melting point of high-temperature material based on image |
| CN111830077B (en) * | 2019-04-23 | 2024-04-02 | 北京振兴计量测试研究所 | Measuring device and method for identifying melting point of high-temperature material based on image |
| CN110487839A (en) * | 2019-08-16 | 2019-11-22 | 河北省产品质量安全检测技术中心 | Image method fuse salt melting point apparatus |
| CN112162002A (en) * | 2020-09-28 | 2021-01-01 | 昆明德源文化传播有限公司 | Enamel processing device, system and method for metal weaving |
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Application publication date: 20190308 |
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